Quick how-to for Mk3 owners:
1.- Purchase knob/boot. :)2.- Remove lower plastic ring from the boot.3.- Remove
the metal clip on the bottom of the knob.4.- Remove stock knob/boot. (Pull
off boot, unscrew the knob)5a.- Push down on the MKIV knob and thread it
onto your shifter.5b.- Buy a hose clamp (1/4" to 5/8" adjustable), then
secure the knob onto the shifter.6.- Put the boot around the MKIII
lip.You're done!